RDP-139 not talking to Navpilot

[boatdog360]

Trying to get my 20 year-old, new to me, Navnet to talk the autopilot. I get a 'NAV DATA NOT PRESENT' on the autopilot. Is here some programming in the setup that I need to do? I cracked open the FAP-5002 controller... can someone confirm that Terminal Block Seven (TB7 NMEA 1 IN/OUT) is wired correctly? The Yellow and Green wire are from one cable that appears to go into the back of the RDP-139 Data 2 the Black and White wire are from a cable that goes to Data 3. Everything else seems to work fine. The Navpilot holds a course well while in Auto.

YES, I realize it is 20 year old tech. YES, I plan on updating in the near future. In the meantime I just want it to work... for now.

 

[boatdog360]

...More pics of setup/diag

 

[Magnetron]

Greetings boatdog360, on your VX2 try turning on a few NMEA sentences under that menu option in the first image (IMG_8803) titled "Select SNTNC:"
- GGA
- VTG
- RMB
- RMC
- APB

Then let me know if the pilot continues to give you the message, "NAV DATA NOT PRESENT" or resolves the issue.

Hope this helps,

- Maggy

 

[boatdog360]

Greetings boatdog360, on your VX2 try turning on a few NMEA sentences under that menu option in the first image (IMG_8803) titled "Select SNTNC:"
- GGA
- VTG
- RMB
- RMC
- APB

Then let me know if the pilot continues to give you the message, "NAV DATA NOT PRESENT" or resolves the issue.

Hope this helps,

- Maggy

Maggy,
Thank you for your reply! I turned on the Sentences per your instruction but still getting the same error. Any additional insight is much appreciated!

 

[FishTech]

It looks to be wired correctly.

Do you know which port on the RDP139 is connected to the NavPilot 500? Hopefully Port 2.
Ensure that you turned on the sentences mentioned above for that particular port.

Ensure the NavPilot 500 Ports are set to match the RDP139 output.


You can also check to see if the data is coming in properly as well.

 

[boatdog360]

Thanks for the help! I only had a few minutes aboard yesterday eve to check settings.

It appeared the Port setting was perhaps incorrect. I did get the Nav function to work somewhat and I was able to Nav to a Waypoint. However the waypoint listed on the Navpilot seemed one digit off.

Also the Navpilot did not seem to want to Nav to a Route.

Again, will do some more checking this weekend and report findings.

 

[boatdog360]

It appears everything is working fine. Nav to Waypoint and Route seem to be working as advertised. Entering the correct SENTENCES, powering off and on again, did the trick.

Thanks for the assistance.